Author
Prajuab Pawarangkoon
Other affiliations: King Mongkut's Institute of Technology Ladkrabang
Bio: Prajuab Pawarangkoon is an academic researcher from Mahanakorn University of Technology. The author has contributed to research in topics: Filter (video) & Low-pass filter. The author has an hindex of 6, co-authored 22 publications receiving 182 citations. Previous affiliations of Prajuab Pawarangkoon include King Mongkut's Institute of Technology Ladkrabang.
Papers
More filters
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TL;DR: In this article, a basic floating inductance simulation circuit with grounded capacitance using only noninverting second-generation current conveyors as active elements is introduced, and the circuit is modified by using current controlled conveyors, yielding electronically tunable inductances.
Abstract: A basic floating inductance simulation circuit with grounded capacitance using only noninverting second-generation current conveyors as active elements is introduced. The circuit is modified by using current controlled conveyors, yielding electronically tunable inductances. Simulation results are also presented.
113 citations
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TL;DR: In this article, a new design for an electronically tunable floating resistor is proposed, which can be realized as a positive or negative resistor without changing the circuit topology, and can be tuned electronically.
Abstract: A new design for an electronically tunable floating resistor is proposed. The proposed circuit can be realized as a positive or negative resistor without changing the circuit topology, and can be tuned electronically. Simulation results are obtained to show adequate agreement with theory.
16 citations
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01 Oct 2016TL;DR: Combining two capacitors with the well-known two-transistor flipped voltage follower circuit, a single-branch transistorized gm-C filter, able to function from a low supply voltage, is obtained.
Abstract: This paper presents a concept of using the flipped voltage follower as a 2nd-order lowpass filter. Combining two capacitors with the well-known two-transistor flipped voltage follower circuit, a single-branch transistorized gm-C filter, able to function from a low supply voltage, is obtained. Besides, the proposed filter can be configured as both single-ended and differential forms. Circuit simulation using 0.35-μm CMOS process shows that, to obtain a 100-Hz cutoff frequency with a 52.2-dB dynamic range, total capacitance of 36 pF and power consumption of 0.36 nW are required for the differential filter that operates in subthreshold region from a supply voltage of 0.6 V. Compared with the previously reported designs in the category of low-power biomedical filters, this proposed filter is the most power-efficient and operates from the lowest level of supply voltage.
12 citations
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06 May 2009TL;DR: In this article, a current-mode analog multiplier/divider based on current conveyors is proposed, which can perform as either a four-quadrant multiplier or a four quadrant divider without changing its topology.
Abstract: This paper presents a current-mode analog multiplier/divider based on current conveyors. The proposed circuit employs only two second-generation current conveyors with controlled current gains (KCCIIs). The circuit is active only; it does not require any external passive element. Then, it is suitable for implementation as integrated circuit. The proposed circuit can perform as either a four-quadrant multiplier or a four-quadrant divider without changing its topology. Simulation results of the circuit show good agreement with theoretical analysis. Applications such as modulator, full-wave rectifier and current amplifier are demonstrated to confirm the versatility of the proposed circuit.
10 citations
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21 Nov 2004
TL;DR: A new design for an electronically tunable floating resistor which can be realized a positive or negative resistor without changing the circuit topology and which is easy to be fabricated in IC technology.
Abstract: A new design for an electronically tunable floating resistor is proposed. The proposed circuit can be realized a positive or negative resistor without changing the circuit topology. Also, the resistance values of the circuit can be tuned electronically. The proposed circuit is based on only one second-generation current controlled conveyor, which is easy to be fabricated in IC technology. Simulation results are obtained to show adequate agreement with theory.
7 citations
Cited by
More filters
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297 citations
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TL;DR: Using a minimum number of passive components, i.e., new grounded and floating inductance simulators, grounded capacitance multipliers, and frequency-dependent negative resistors based on one/two modified current-feedback operational amplifiers (MCFOAs), are proposed.
Abstract: In this paper, using a minimum number of passive components, i.e., new grounded and floating inductance simulators, grounded capacitance multipliers, and frequency-dependent negative resistors (FDNRs) based on one/two modified current-feedback operational amplifiers (MCFOAs), are proposed. The type of the simulators depends on the passive element selection used in the structure of the circuit without requiring critical active and passive component-matching conditions and/or cancellation constraints. In order to show the flexibility of the proposed MCFOA, a single-input three-output (SITO) voltage-mode (VM) filter, two three-input single-output (TISO) VM filters, and an SITO current-mode (CM) filter employing a single MCFOA are reported. The layout of the proposed MCFOA is also given. A number of simulations using the SPICE program and some experimental tests are performed to exhibit the performance of the introduced structures.
139 citations
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TL;DR: Circuit realisations of emulators transforming memristive devices into effective floating memcapacitive and meminductive systems are suggested.
Abstract: Suggested are circuit realisations of emulators transforming memristive devices into effective floating memcapacitive and meminductive systems. The emulator's circuits are based on second generation current conveyors and involve either four single-output or two dual-output current conveyors. The equations governing the resulting memcapactive and meminductive systems are presented.
113 citations
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TL;DR: In this paper, an active circuit suitable for realizing floating inductance, capacitance, FDNR and admittance converter depending on the selection of passive elements of the circuit is presented, which employs only two dual output second-generation current conveyors (DO-CCIIs) and does not require passive element matching.
Abstract: An active circuit suitable for realizing floating inductance, capacitance, FDNR and admittance converter depending on the selection of passive elements of the circuit is presented. The proposed circuit employs only two dual output second-generation current conveyors (DO-CCIIs) and does not require passive element matching. The proposed network has a grounded capacitor for the floating inductance and capacitance simulation. Frequency performance of the circuit is tested using SPICE.
81 citations
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TL;DR: In this paper, a floating inductance simulator based on second generation current conveyors is presented, which shows the capability of regulation and cancellation of the undesired inductance series resistance, with consequent increase in the low frequency operating range.
Abstract: A novel floating inductance simulator, based on second generation current conveyors, is presented The circuit shows the capability of regulation and, in theory, cancellation of the undesired inductance series resistance, with consequent increase in the low frequency operating range Simulation results are included to prove the effectiveness of this solution
78 citations